CA2136072A1 - Method of detecting a deflated tyre on a vehicle - Google Patents

Method of detecting a deflated tyre on a vehicle

Info

Publication number
CA2136072A1
CA2136072A1 CA002136072A CA2136072A CA2136072A1 CA 2136072 A1 CA2136072 A1 CA 2136072A1 CA 002136072 A CA002136072 A CA 002136072A CA 2136072 A CA2136072 A CA 2136072A CA 2136072 A1 CA2136072 A1 CA 2136072A1
Authority
CA
Canada
Prior art keywords
del
vehicle
tyre
error value
deflated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002136072A
Other languages
French (fr)
Other versions
CA2136072C (en
Inventor
David Jones
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2136072A1 publication Critical patent/CA2136072A1/en
Application granted granted Critical
Publication of CA2136072C publication Critical patent/CA2136072C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle
    • B60C23/061—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle by monitoring wheel speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/06—Signalling devices actuated by deformation of the tyre, e.g. tyre mounted deformation sensors or indirect determination of tyre deformation based on wheel speed, wheel-centre to ground distance or inclination of wheel axle

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)
  • Tires In General (AREA)
  • Testing Of Balance (AREA)

Abstract

A method of detecting a deflated tyre on a vehicle by comparing the rolling radii of the tyres by means of comparing angular velocity speed signals from wheel speed sensors one at each whee1 (1; 2, 3, 4), charac terised by calculating an error value DEL' where DEL' =[(C1+G4)/2-(C2+C3)/2] x 100 / (C1+C2+C3+C4)/4 wherein C1, C2, C3 and C4 are angular velocity val-ues for left-hand front (1), right hand front(2), left-hand rear(3) and right hand rear (4) wheels of the vehicle re-spectively, determining a correction factor LAT, calcu-lating a corrected error value DEL when DEL = DEL'-DELCOR wherein DELCOR=(LAT x A) + (B x LAT2) wherein A and B are vehicle related constants, and op-erating a tyre warning indicator provided in the vehicle to indicate that at least one tyre is deflated when it is sensed drat the magnitude of the corrected error value DEL is in the range 0.05 to 0.5.
CA002136072A 1993-04-01 1994-03-29 Method of detecting a deflated tyre on a vehicle Expired - Lifetime CA2136072C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9306846.8 1993-04-01
GB939306846A GB9306846D0 (en) 1993-04-01 1993-04-01 Method of detecting a defalted tyre on a vehicle
PCT/JP1994/000501 WO1994022681A1 (en) 1993-04-01 1994-03-29 Method of detecting a deflated tyre on a vehicle

Publications (2)

Publication Number Publication Date
CA2136072A1 true CA2136072A1 (en) 1994-10-13
CA2136072C CA2136072C (en) 2002-05-28

Family

ID=10733180

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002136072A Expired - Lifetime CA2136072C (en) 1993-04-01 1994-03-29 Method of detecting a deflated tyre on a vehicle

Country Status (11)

Country Link
US (1) US5589816A (en)
EP (1) EP0642427B1 (en)
JP (1) JP2735387B2 (en)
KR (1) KR100307088B1 (en)
AT (1) ATE149433T1 (en)
AU (1) AU670683B2 (en)
CA (1) CA2136072C (en)
DE (1) DE69401879T2 (en)
ES (1) ES2098128T3 (en)
GB (1) GB9306846D0 (en)
WO (1) WO1994022681A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5838230A (en) * 1992-07-11 1998-11-17 Sumitomo Rubber Industries, Ltd. Method of detecting a deflated tire on a vehicle
JP3509331B2 (en) * 1995-10-11 2004-03-22 本田技研工業株式会社 Vehicle wheel pressure reduction judgment device
US5721374A (en) * 1996-08-19 1998-02-24 Delco Electronics Corporation Method of detecting low tire pressure by comparing wheel speeds
US5760682A (en) * 1997-03-07 1998-06-02 Robert Bosch Gmbh Method for detecting a deflated tire on a vehicle
DE69930060T2 (en) * 1998-04-02 2006-09-21 Sumitomo Rubber Industries Ltd., Kobe Device and method for warning against tire pressure loss
US6222444B1 (en) 2000-04-03 2001-04-24 Robert Bosch Corporation Method for detecting a deflated tire on a vehicle
US6285280B1 (en) 2000-06-26 2001-09-04 Robert Bosch Corporation Method for detecting a deflated tire on a vehicle
US6459369B1 (en) 2000-11-22 2002-10-01 Robert Bosch Corporation Tire deflation detection system with feedback component
US6774776B2 (en) 2002-07-30 2004-08-10 Sumitomo Rubber Industries, Ltd. Method and apparatus for alarming decrease in tire air-pressure
KR101647696B1 (en) * 2015-07-13 2016-08-11 현대오트론 주식회사 Apparatus and method for monitoring tire pressure using radius analysis

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8711310D0 (en) * 1987-05-13 1987-06-17 Sp Tyres Uk Ltd Tyres deflation warning device
FR2664536B1 (en) * 1990-07-12 1992-10-09 Renault METHOD FOR DETECTING THE INFLATION OF A TIRE.
GB9109466D0 (en) * 1991-05-02 1991-06-26 Sumitomo Rubber Ind A method of detecting a deflated tyre on a vehicle
GB9207271D0 (en) * 1992-04-02 1992-05-13 Sumitomo Rubber Ind Method of detecting a deflated tyre on a vehicle
US5838230A (en) * 1992-07-11 1998-11-17 Sumitomo Rubber Industries, Ltd. Method of detecting a deflated tire on a vehicle

Also Published As

Publication number Publication date
AU670683B2 (en) 1996-07-25
KR100307088B1 (en) 2002-04-24
GB9306846D0 (en) 1993-05-26
EP0642427A1 (en) 1995-03-15
AU6291594A (en) 1994-10-24
CA2136072C (en) 2002-05-28
US5589816A (en) 1996-12-31
ES2098128T3 (en) 1997-04-16
DE69401879T2 (en) 1997-06-12
EP0642427B1 (en) 1997-03-05
WO1994022681A1 (en) 1994-10-13
ATE149433T1 (en) 1997-03-15
JP2735387B2 (en) 1998-04-02
JPH08501040A (en) 1996-02-06
KR950701867A (en) 1995-05-17
DE69401879D1 (en) 1997-04-10

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20140331

MKEX Expiry

Effective date: 20140331